Unhappy Help: I9305 efs folder is failure

Hi all first sorry for my bad english, i hope can convey me porpuse
I caught of friend an i9305 for recovery baseband and imei
I havent any backup of imei or nv_data and my baseband and imei is null ver.4.1.2
When use *#1234# it shows this detail
AP:I9305XXBMD5 ,CP:UNKNOWN ,CSC:I9305DBTBME1
I did this relation that consist:
Root by cf, install busybox 1.20.2 ,intall rom toolbox lite flash by param file in forum but it not effect, than via efs professional and terminal and multiple software get efs.img. after delete efs folder by rom toolbox. when i restore this img file, all method become done.
After reboot phone my problem is whitout changeable.
I think my efs folder is failure.
So finally i have to used QPST for get nv data, all driver is mounted of phone but this softwear not detect my phone and shows no phone i test it by several pc and all like message.
Via nv tool give too error phone connection has been lost! and no answer from phone.
In the situation please help me to solve this issue.